| Lee Si-young | |
| Birth Date: | 21 April 1997 |
| Birth Place: | South Korea |
| Height: | 1.73 m |
| Currentclub: | Seongnam |
| Clubnumber: | 12 |
| Position: | Defender |
| Youthclubs1: | Jeonju University |
| Youthyears1: | 2016–2017 |
| Years1: | 2018 |
| Caps1: | 4 |
| Goals1: | 0 |
| Years2: | 2019 |
| Clubs2: | → Gwangju (loan) |
| Caps2: | 13 |
| Goals2: | 0 |
| Years3: | 2020 |
| Caps3: | 11 |
| Goals3: | 0 |
| Years4: | 2021-2022 |
| Caps4: | 51 |
| Goals4: | 0 |
| Years5: | 2023 |
| Nationalyears1: | 2018 |
| Nationalteam1: | South Korea U23 |
| Nationalcaps1: | 3 |
| Nationalgoals1: | 0 |
| Club-Update: | 27 September 2022 |
| Nationalteam-Update: | 21 November 2018 |
| Hangul: | 이시영 |
| Hanja: | 李是英 |
| Mr: | I Siyŏng |
| Rr: | I Si-yeong |
Lee Si-young (; born 21 April 1997) is a South Korean footballer currently playing as a defender for Seongnam.
On 22 December 2022, Lee Si-young is joined FC Seoul.[1]